Breakouts:

site type timestamp offset
P090-02-S0090 velocity 2014-04-11 01:00:00 -0.82
P090-02-S0090 velocity 2014-04-22 07:00:00 0.73
P090-02-S0090 velocity 2014-05-08 00:00:00 -0.57
P090-02-S0090 velocity 2014-05-18 07:00:00 0.11
WLL-0100 velocity 2014-04-29 21:00:00 0.45
WLL-0100 velocity 2014-05-09 21:00:00 -0.43

Appendix: A complete list of monitored sites